Personal Brain MCP

Agent access to a personal knowledge graph, powered by TheBrain.

Thoughts, links, types, tags, notes and attachments are all first-class and all reachable. It carries BrainQuery, a Cypher-like language for pattern matching across the graph, alongside full create-and-update tooling and paginated traversal for graphs too large to walk in one call.

What it is actually for is memory that survives the session. An agent arriving cold reads the graph and knows what was decided last week, what is in progress, and what is waiting on a human — because the structure carries that, not the conversation history. Several agents can share one graph and coordinate through it.

At a glance

🔓 Apache 2.0 top to bottom — no open core, no paid tier
🔌 Built on FastMCP 3.4.7 — any compliant MCP client connects
🤝 Honors the DPYC Social Contract
🔑 Credentials optional. Your TheBrain API key travels by encrypted Nostr DM and never sits in your config
⚡ Any Lightning wallet. Wallet of Satoshi for reliability

Links

GitHub: lonniev/thebrain-mcp
🔌 Connect: personal-brain.fastmcp.app/mcp